
Seorim Construction Co. Ltd.South Korea

Dongguan Zhongming Precision Hardware Electronic Technology Co., Ltd.Guangdong Sheng, China

China Railway 16th Bureau Group Metro Engineering Co., Ltd.

Shanghai Qianchong Trading Co., Ltd.Shanghai Shi, China

Shanghai Hongli Purification Technology Co., Ltd.Shanghai Shi, China

Fujian Quanhui Messer Gas Co., Ltd.Fujian Sheng, China

Liaoning Cast Metal Material Development Co., Ltd.Liaoning Sheng, China

Keyosk Corp.Hawaii, United States

Tianjin Fuen New Energy Technology Co., Ltd.Tianjin Shi, China

Shanghai Tianchen Modern Environmental Technology Co., Ltd.Shanghai Shi, China

Zhejiang Tiandi Environmental Protection Technology Co., Ltd.

Sidley Luobao Energy Saving Materials Technology Co., Ltd.Hebei Sheng, China